Nervous System Review #2

Front

What are tracts of unmyelinated fibers in the CNS called?

Back

Gray matter.

Front

What are the branches of a neuron that collect stimuli and transport them to a cell body?

Back

Dendrites.

Front

What is the function of serotonin in the nervous system?

Back

Serotonin promotes sleep and balanced emotions.

Front

Which lobe of the brain is responsible for higher cognitive functions, such as reasoning and planning?

Back

Frontal lobe.

Front

Where does a reflex action end?

Back

At the effector.

Front

What is the primary role of the central nervous system (CNS)?

Back

To process and transmit information throughout the body.

Front

What is the difference between gray matter and white matter in the CNS?

Back

Gray matter contains unmyelinated fibers and neuron cell bodies, while white matter contains myelinated fibers.

Front

What is the role of neurotransmitters in the nervous system?

Back

Neurotransmitters transmit signals across synapses between neurons.

Front

What is the function of the dendrites in a neuron?

Back

Dendrites receive signals from other neurons and convey this information to the cell body.

Front

What is the significance of the effector in a reflex arc?

Back

The effector carries out the response to a stimulus.